Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

Washington Zone 1, DC

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
202-538 5 WASKDCFNAMD  6402 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - DC 236   2006-02-06   
202-538 6 BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2004-02-16   
202-538 7   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2004-02-16   
202-538 8 WASHDCGGDS0  9211 VERIZON WASHINGTON DC, INC. 236      
202-538 9 WASKDCFNAMD  6402 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - DC 236   2006-02-06   
202-539 A WASHDCDP8MD  074F BANDWIDTH.COM CLEC, LLC - DC 236      
202-539 0 WASHDCDP8MD  074F BANDWIDTH.COM CLEC, LLC - DC 236      
202-539 1 WASHDCDP8MD  074F BANDWIDTH.COM CLEC, LLC - DC 236      
202-539 2 WASHDCDP8MD  074F BANDWIDTH.COM CLEC, LLC - DC 236      
202-539 3 BTVLMD12CMA  5562 METROPCS, INC. 236   2019-01-28   
202-539 4 WASHDCDP8MD  074F BANDWIDTH.COM CLEC, LLC - DC 236      
202-539 5 BTVLMD12CMA  5562 METROPCS, INC. 236   2019-01-28   
202-539 6 WASHDCDP8MD  074F BANDWIDTH.COM CLEC, LLC - DC 236      
202-539 7 WASHDCDP8MD  074F BANDWIDTH.COM CLEC, LLC - DC 236      
202-539 8 WASHDCDP8MD  074F BANDWIDTH.COM CLEC, LLC - DC 236      
202-539 9 WASHDCDP8MD  074F BANDWIDTH.COM CLEC, LLC - DC 236      
202-540 A WASHDCDP8MD  074F BANDWIDTH.COM CLEC, LLC - DC 236      
202-540 0 WASHDCDP8MD  074F BANDWIDTH.COM CLEC, LLC - DC 236   2008-07-19   
202-540 1   829J PAETEC ITEL, LLC 236   2008-08-11   
202-540 2   829J PAETEC ITEL, LLC 236   2008-08-11   
202-540 3   829J PAETEC ITEL, LLC 236   2008-08-11   
202-540 4   829J PAETEC ITEL, LLC 236   2008-08-11   
202-540 5   829J PAETEC ITEL, LLC 236   2008-08-18   
202-540 6   829J PAETEC ITEL, LLC 236   2008-07-31   
202-540 7   829J PAETEC ITEL, LLC 236   2008-12-10   
202-540 8 MCLNVA23DS4  6117 LEVEL 3 COMMUNICATIONS, LLC - DC 236   2008-07-20   
202-540 9 MCLNVA23DS4  6117 LEVEL 3 COMMUNICATIONS, LLC - DC 236   2008-07-20   
202-541 A WASHDCGGDS0  9211 VERIZON WASHINGTON DC, INC. 236      
202-542 A WASHDCDP8MD  9748 AMERICAN MESSAGING SERVICES, LLC 236      
202-543 A WASHDCLCDS0  9211 VERIZON WASHINGTON DC, INC. 236      
202-544 A WASHDCLCDS0  9211 VERIZON WASHINGTON DC, INC. 236      
202-545 A WASHDCGGDS0  9211 VERIZON WASHINGTON DC, INC. 236      
202-545 0 WASHDCGGDS0  9211 VERIZON WASHINGTON DC, INC. 236      
202-545 1 WASHDCGGDS0  9211 VERIZON WASHINGTON DC, INC. 236      
202-545 2 WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
202-545 3 MCLNVA23DS4  6117 LEVEL 3 COMMUNICATIONS, LLC - DC 236   2014-12-13   
202-545 4 WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
202-545 5 WASHDCGGDS0  9211 VERIZON WASHINGTON DC, INC. 236      
202-545 6 MCLNVA23DS4  6117 LEVEL 3 COMMUNICATIONS, LLC - DC 236   2014-12-13   
202-545 7 MCLNVA23DS4  6117 LEVEL 3 COMMUNICATIONS, LLC - DC 236   2014-12-13   
202-545 8 WASHDCGGDS0  9211 VERIZON WASHINGTON DC, INC. 236      
202-545 9 WASHDCGGDS0  9211 VERIZON WASHINGTON DC, INC. 236      
202-546 A WASHDCLCDS0  9211 VERIZON WASHINGTON DC, INC. 236      
202-547 A WASHDCLCDS0  9211 VERIZON WASHINGTON DC, INC. 236      
202-548 A WASHDCLCDS0  9211 VERIZON WASHINGTON DC, INC. 236      
202-548 0 WASHDCLCDS0  9211 VERIZON WASHINGTON DC, INC. 236      
202-548 1 WASHDCLCDS0  9211 VERIZON WASHINGTON DC, INC. 236      
202-548 2 WASHDCLCDS0  9211 VERIZON WASHINGTON DC, INC. 236      
202-548 3 WASHDCLCDS0  9211 VERIZON WASHINGTON DC, INC. 236      
202-548 4 WASHDCLCDS0  9211 VERIZON WASHINGTON DC, INC. 236      
202-548 5 WASHDCLCDS0  9211 VERIZON WASHINGTON DC, INC. 236      
202-548 6 WASHDCLCDS0  9211 VERIZON WASHINGTON DC, INC. 236      
202-548 7 MCLNVA23DS4  6117 LEVEL 3 COMMUNICATIONS, LLC - DC 236   2014-12-13   
202-548 8 WASHDCLCDS0  9211 VERIZON WASHINGTON DC, INC. 236      
202-548 9 WASHDCLCDS0  9211 VERIZON WASHINGTON DC, INC. 236      
202-549 A BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
202-550 A BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
202-551 A WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
202-551 0 WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
202-551 1 WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
202-551 2 WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2004-06-10   
202-551 3 WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2004-06-10   
202-551 4 WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2004-06-10   
202-551 5 WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2004-06-10   
202-551 6 WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2004-06-10   
202-551 7 WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2004-06-10   
202-551 8 WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2004-06-10   
202-551 9 WASHDCTTDS0  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
202-552 A   829J PAETEC ITEL, LLC 236   2025-04-02   
202-552 0 MCLNVA23DS4  6117 LEVEL 3 COMMUNICATIONS, LLC - DC 236   2007-12-16   
202-552 1 MCLNVA23DS4  6117 LEVEL 3 COMMUNICATIONS, LLC - DC 236   2007-12-16   
202-552 2   829J PAETEC ITEL, LLC 236   2006-02-10   
202-552 3   829J PAETEC ITEL, LLC 236   2006-02-10   
202-552 4   829J PAETEC ITEL, LLC 236   2006-02-10   
202-552 5   829J PAETEC ITEL, LLC 236   2006-02-10   
202-552 6   829J PAETEC ITEL, LLC 236   2006-02-10   
202-552 7   829J PAETEC ITEL, LLC 236   2006-02-10   
202-552 8   829J PAETEC ITEL, LLC 236   2006-02-10   
202-552 9 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2006-03-01   
202-553 A BTVLMD12CMA  5562 METROPCS, INC. 236      
202-553 0 BTVLMD12CMA  5562 METROPCS, INC. 236   2008-01-06   
202-553 1 BTVLMD12CMA  5562 METROPCS, INC. 236   2008-01-06   
202-553 2 BTVLMD12CMA  5562 METROPCS, INC. 236   2008-01-06   
202-553 3 BTVLMD12CMA  5562 METROPCS, INC. 236   2008-01-06   
202-553 4 BTVLMD12CMA  5562 METROPCS, INC. 236   2008-01-06   
202-553 5 BTVLMD12CMA  5562 METROPCS, INC. 236   2008-01-06   
202-553 6 BTVLMD12CMA  5562 METROPCS, INC. 236   2008-01-06   
202-553 7 BTVLMD12CMA  5562 METROPCS, INC. 236   2008-01-06   
202-553 8 BTVLMD12CMA  5562 METROPCS, INC. 236   2008-01-06   
202-553 9 BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2008-01-06   
202-554 A WASHDCSWDSA  9211 VERIZON WASHINGTON DC, INC. 236      
202-556 A BTVLMD12CMA  5562 METROPCS, INC. 236      
202-556 0 WASHDCDP8MD  074F BANDWIDTH.COM CLEC, LLC - DC 236   2009-09-06   
202-556 1 WASHDCDP8MD  074F BANDWIDTH.COM CLEC, LLC - DC 236   2009-09-06   
202-556 2   829J PAETEC ITEL, LLC 236   2009-04-07   
202-556 3 WASHDCDP8MD  074F BANDWIDTH.COM CLEC, LLC - DC 236   2009-09-06   
202-556 4 WASHDCDP8MD  074F BANDWIDTH.COM CLEC, LLC - DC 236   2010-03-05   
202-556 5 BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2009-03-06   
202-556 6 BTVLMD12CMA  5562 METROPCS, INC. 236   2009-03-06   
202-556 7 BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2009-03-06   

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 >>

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.